How do i get the orientation of the mouse.hit?

so im trying to make a portal gun and i need to get the part orientation that the mouse is aiming at so i can rotate the portal depending on the orientation of the walls heres what i've tried so far:

script.Parent.hit.OnServerInvoke = function(player,hitp)
    workspace.Blue.CFrame = hitp
    workspace.Blue.Orientation = Vector3.new(0, 0, 0)
    print("blue")
    end
script.Parent.hit2.OnServerInvoke = function(player,hitp)
    workspace.Red.CFrame = hitp
    workspace.Red.Orientation = Vector3.new(0, 0, -90)
    if hitp.Orientation.Y == 90 then
    workspace.Red.Orientation = Vector3.new(0, 90, -90)
    print("Red")
    end
end

but mouse.hit is a cframe so that doesnt work i even tried changing what is in if to

if hitp == CFrame(0,90,0) then

end

and too putting CFrame.new